100% Recycled Polyester. Design: Plain. Button at Top, Contrast Sandwich Peak, Laser Cut Ventilation, Pre-Curved Peak, Size Adjuster, Structured Front Panel, Tearaway Label, Ultra-Soft Sweatband. Fabric Technology: Moisture Wicking. Fastening: Snapback. Sustainability: Control Union CU811033, GRS Certified. Ref: UTBC7457